Flat warp knitting machine



Feb. 25, 1936. G. SAUPE FLAT WARP KNITTING MACHINE.

Filed April 20, 1934 2 Sheets-$heet 1 FIG. 4-

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7 (flaw I 0 9 2172,22 fliaorne/v Feb. 25, 1936.

G. SAUPE FLAT WARP KNITTING MACHINE Filed April 20, 1934 2 Sheets-Sheet2 I Patented Feb. 25, 1936 UNITED STATES 2,032,152 v FLAT WARP KNITTINGMACHINE Georg Saupe, Limbach, Germany Application April 20,1934, SerialNo. 721,616 I Germany May 24, 1933 4 Claims.

This invention relates to a flat warp frame, in which at the knockingover moment the two needle rows are arranged relative to one another atan acute angle and the knocking over edgepiece of the sinkers isdisposed rectangularly to the respective needles.

In fiat double warp knitting machines the needle row, at the moment whenknocking over takes place, should be positioned, so far as possible,vertically to the knocking over edge of the adjacent sinkers, asotherwise the meshes to be knocked off will be displaced to a greater orlesser extent along the knocking over edge and the forces eflectingknocking over will become active relative to the needles obliquely tothe longitudinal direction thereof with the result that the needles arebent. Furthermore, the course will be knocked over unevenly and defectsin the fabric will be produced. Since the beak of the sinker should bepreferably parallel to the opposite needle row, it was hithertonecessary to incline the needles to a considerable extent at theknocking over time, whereas they were to be as steep as possible duringlapping.

In order to comply with these requirements the needle bars must carryout a swinging motion .during ascent, which demands a cumbersome gearsystem, because it is impossible to arrange the needle bar at the pointforming the center of the '30 requisite swinging motion.

To avoid the above-mentioned drawbacks of knowndouble warp frames theinvention provides at the knocking over edge of the sinker edgesextending as parallel as possible to the longitudi- I 85 nal directionof the opposite needles a notch or a. corresponding deflection; so thatthe knocking .over edge-piece, in known manner, will be disposedvertically to the longitudinal direction of the a acent needles, butobliquely to the longidirection of the beak of the sinker.

- By wayof example, one form of the invention is illustrated in theaccompanying drawings, inwhich Figure [shows the-position of theknitting tools at the time when the threads are placedon the 4'6 leftneedle row; Fig. 2, the knocking over of newly formed loops at theright-handrow or sinkers, the sinkers, in the same-way as in Fig. 1,being disposed outside the angular space enclosed by the needle bars;Fig. 3 shows the sinker bars arranged 80 between the needle bars; andFigs. 4 and 5 show modified forms of sinkers. 4

Referring to the drawings, the .two needle rows l and 2 are secured totheneedle bars 5 and 6 by the leads 3 and 4. Outside the angular spaceenclosed by the bars 5 and 6 the sinkers I and 8 are secured to the barsII and I2 by the leads 9 and I0. Above the sinker bars H and I! aplurality oi lapping machines are arranged, two machines l3 and I4 beingshown in the construction illustrated. The presser 'bars are 5 omittedin the drawings for the sake of simplicity.

During the knitting process the two needle rows l and 2 carry out theusual motions both in their longitudinal direction and transverselythereto, and are slightly swung if necessary. In 10 known manner, thesinkers with their beards have to beadjusted now to the longitudinalaxis of the opposite needle row and then again transversely to theadjacent needles, and for this purpose, according to the invention, thesinker beard 15 I5 is arranged so that its longitudinal direction isapproximately parallel to that of the opposite needles, but extends fora short distance [6 with its top edge approximately vertically to thelongitudinal direction of the appurtenant needles, so 20 that at thisspecial edge portion the meshes can be knocked over in satisfactorymanner according to Fig. 2. For example, the beard l5 of the sinkers Iis disposed approximately parallel to the longitudinal direction of theneedles {whereas 5 the edge portion l6 has an approximately verticaldirection to the longitudinal direction of the needles I.correspondingly, in the sinkers 8 the beard I5 is approximately parallelto the longitudinal direction of the opposite needles I while 0 the edgeportion I6 is arranged approximately vertically to the longitudinaldirection of the adjacent needles 2. The knockingover edges N5 of thesinker beards l5 are then perfected either by the provision of notchlikerecesses (Figs. 1 to 3) in the upper sinker edge or by projecting noses20 on the latter (Fig. 5).

'In addition to the beard ii, the sinkers 'I and 8' possess an enclosingnose I! disposed approximately parallel to the beard l5 of therespective 40 sinker. At their free ends the sinkers 1 and 8 are kept atthe proper distance from one another by the leads l8.

Instead of disposing the sinkers I and 8 outside the space limited bythe needle bars 5 and 6, they could be arranged also between the'needlebars, as shown in Fig. 3. Even in this case, the enclosing throat IQ ofeach. sinker l and 8' should be arranged approximately in thelongitudina1- direction of the opposite needles'and in the portion ofthe sinker edge adjacent to the enclosing throat apart It should beprovided approximately vertically to the longitudinal direction of theadjacent needles.

Instead of providing for the bend in the sinker 5 angle to one another;and sinker bars and sinkmust'be moved relative to one another in such away that knocking over is effected within the enclosing throat.

I claim: Y

1. A warp knitting machine comprising needle bars; needle rows securedto said bars and at knocking over time being disposed at an acute erssecured to said bars, each of said sinkers having a throat, the loweredge of which forming the upper edge of the beard of the sinkers beingarranged approximately parallel to the stems of the opposite needlesdeflection and a part of said deflection forming the knocking overedge-piece being extended apa m ma with a proximately at right angles tothe stems of the adjacent needles.

2. A warp knitting machine according to claim 1, in which the deflectionof the lower edge of the sinker throat formed by a notch.

3. A warp knitting machine according to claim 1, inwhich the deflectionof the lower edge 01' the sinker throat is formed by a projection.

4. A warp knitting machine according to claim 1, in whiehthe deflectionof the loweredge oi the sinker throat is formed by inclining the throatat its upper end.

- GEORG SAEJPE.

